public class Name4{
 public static void main(String[] args){
System.out.println("                    *                         ");
System.out.println("                   ***                      ");
System.out.println("                  *****                     ");
System.out.println("                *********                   ");
System.out.println("              *************                 ");
System.out.println("            *****************               ");
System.out.println("                   ***                      ");
System.out.println("                  *****                     ");
System.out.println("                *********                   ");
System.out.println("              *************                 ");
System.out.println("            *****************               ");
System.out.println("          ********************              ");
System.out.println("        *************************           ");
System.out.println("      *****************************         ");
System.out.println("              *************               ");
System.out.println("              *************               ");
System.out.println("              *************               ");
System.out.println("              *************               ");
System.out.println("              *************               ");
System.out.println("              *************               ");
}
}

